Travel backpacks should be both functional and comfortable. When you're on the go, the last thing you want is a pain in the ...

In the figure below, each city - except the first one - has a set of items with (value, weight). Consider then the knapsack capacity as 3, the usage fee as 1, the max speed 1 and minimum 0.1. The ...

In a woodland sanctuary north-east of Canberra, a bush stone-curlew named Phil wears a tiny handmade backpack. Fitted to that backpack is a GPS, which helps researchers monitor the birds ...